US9195017B2 - Optical module and optical transceiver module - Google Patents

Optical module and optical transceiver module Download PDF

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Publication number
US9195017B2
US9195017B2 US13/912,619 US201313912619A US9195017B2 US 9195017 B2 US9195017 B2 US 9195017B2 US 201313912619 A US201313912619 A US 201313912619A US 9195017 B2 US9195017 B2 US 9195017B2
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United States
Prior art keywords
light
optical
guide element
beam splitter
light beam
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US13/912,619
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US20140294400A1 (en
Inventor
Yu-Hsien LIAO
Ming-Yi Huang
Te-Hsuan YANG
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Delta Electronics Inc
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Delta Electronics Inc
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Assigned to DELTA ELECTRONICS, INC. reassignment DELTA ELECTRONICS, INC. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: HUANG, MING-YI, LIAO, YU-HSIEN, YANG, TE-HSUAN
Publication of US20140294400A1 publication Critical patent/US20140294400A1/en
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Classifications

    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/02—Optical fibres with cladding with or without a coating
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4286—Optical modules with optical power monitoring
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B10/00—Transmission systems employing electromagnetic waves other than radio-waves, e.g. infrared, visible or ultraviolet light, or employing corpuscular radiation, e.g. quantum communication
    • H04B10/40—Transceivers
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4204—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms
    • G02B6/4214—Packages, e.g. shape, construction, internal or external details the coupling comprising intermediate optical elements, e.g. lenses, holograms the intermediate optical element having redirecting reflective means, e.g. mirrors, prisms for deflecting the radiation from horizontal to down- or upward direction toward a device
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4246—Bidirectionally operating package structures
    • G—PHYSICS
    • G02—OPTICS
    • G02B—OPTICAL ELEMENTS, SYSTEMS OR APPARATUS
    • G02B6/00—Light guides; Structural details of arrangements comprising light guides and other optical elements, e.g. couplings
    • G02B6/24—Coupling light guides
    • G02B6/42—Coupling light guides with opto-electronic elements
    • G02B6/4201—Packages, e.g. shape, construction, internal or external details
    • G02B6/4255—Moulded or casted packages

Definitions

  • the present invention relates to an optical module and an optical transceiver module, and in particular to an optical module and an optical transceiver using
  • Fiber-optic communication is a way for transmitting information by using light and optical fiber, which is belonging to a wire communication and has advantages of high transmission capacity and safety, and is progressively becoming a main wire communication way.
  • laser diode with transistor outline can (TO can) package is widely used in optical fiber communication.
  • laser diode with TO can package is just perpendicularly disposed on a circuit board, such that optical coupled difficulty is increase when coupling a light beam emitted from the laser diode into an optical fiber, and partially light beam lost when coupling the light beam into the laser diode.
  • the TO can package is usually made of metallic material, such that the manufacturing cost is expansive and the volume cannot be effectively minimized.
  • the optical module includes a first light-guide element, an optical element, a first optical fiber, and a beam splitter.
  • the first light-guide element includes a first surface and a second surface.
  • the optical element corresponds to the first surface.
  • the first optical fiber is contacted with the second surface.
  • the beam splitter is attached to the first surface.
  • the beam splitter partially reflects and partially transmits a light beam striking thereon.
  • a refractive index of the beam splitter is different from a refractive index of the first light-guide element.
  • the optical module further comprises an optical combining structure disposed between the first light-guide element and the beam splitter, the optical combining structure is used for fastening the beam splitter on the first light-guide element.
  • the optical module further comprises a micro optical sensor for sensing a transmitting light beam transmitting through the beam splitter.
  • the refractive index of the first light-guide element is between 1.12 and 2.08.
  • the beam splitter is a filtering plate, an optical film, an optical resin or an optical cement.
  • a light emitting surface of the beam splitter comprises a plurality of micro-structures.
  • the optical element corresponds to the protrusion portion.
  • the beam splitter is contacted with the recess.
  • the optical transceiver module comprises an optical module.
  • the optical module comprises a first light-guide element, an optical element, a first optical fiber, and a beam splitter.
  • the first light-guide element comprises a first surface and a second surface.
  • the optical element corresponds to the first surface, and the optical element is a light emitting element.
  • the first optical fiber is contacted with the second surface.
  • the beam splitter is attached to the first surface.
  • the beam splitter partially reflects and partially transmits a light beam striking thereon.
  • a refractive index of the beam splitter is different from a refractive index of the first light-guide element.
  • a second light-guide element combines with the first light-guide element.
  • a second optical fiber corresponds to the second light-guide element for propagating an external light beam into the second light-guide element.
  • a light receiving element corresponds to the second light-guide element.
  • the light receiving element is configured of receiving the external light beam.
  • first light-guide element and the second light-guide element are in one-piece form or the first light-guide element and the second light-guide element are combined by connecting to each other.
  • the optical transceiver module further comprises an optical combining structure disposed between the first light-guide element and the beam splitter, the optical combining structure is used for fastening the beam splitter on the first light-guide element.
  • the optical transceiver module further comprises a micro optical sensor for sensing a transmitting light beam transmitting through the beam splitter.
  • the refractive index of the first light-guide element is between 1.12 and 2.08.
  • the beam splitter is a filtering plate, an optical film, an optical resin or an optical cement.
  • a light emitting surface of the beam splitter comprises a plurality of micro-structures.
  • the optical element corresponds to the protrusion portion.
  • the beam splitter is contacted with the recess.
  • FIG. 1 is a perspective view of an optical transceiver module according to the present invention.
  • FIG. 2 is a sectional view of the optical transceiver module on line 2 - 2 shown in FIG. 1 .
  • FIG. 3 is a sectional view of the optical transceiver module on line 3 - 3 shown on FIG. 1 .
  • FIG. 1 is a perspective view of an optical transceiver module according to the present invention
  • FIG. 2 is a sectional view of the optical transceiver module on line 2 - 2 shown on FIG. 1
  • the optical transceiver module 1 includes an optical module 10 .
  • the optical module 10 includes a first light-guide element 12 , an optical element 14 , a first optical fiber 16 , and a beam splitter 18 .
  • a refractive index of the first light-guide element 12 is preferably between 1.12 and 2.08.
  • the first light-guide element 12 includes a first surface 120 faced to a first direction and a second surface 122 faced to a second direction different from the first direction. The first direction is different from the second direction.
  • the first surface 120 includes a protrusive portion 1202 and a recess 1204 formed thereon.
  • the first light-guide element 12 of an exemplary embodiment of the present invention further includes a first total internal reflection surface 124 , a second total internal reflection surface 126 , and a third total internal reflection surface 128 .
  • a facing direction of the first total internal reflection surface 124 , the second total internal reflection surface 126 , and the third total internal reflection surface 128 is different from the first direction.
  • the first total internal reflection surface 124 is designed for making an incident angle of a light beam emitted by the optical element 14 and striking the first total internal reflection surface 124 be larger than or equal to a critical angle of total internal reflection, such that total internal reflection is happening when the light beam emitted by the optical element 14 and entering the first light-guide element 12 strikes the first total internal reflection surface 124 .
  • the second total internal reflection surface 126 is designed for making an incident angle of a light beam total internal reflected on the first internal reflection surface 124 and striking to the second total internal reflection surface 126 be larger than or equal to the critical angle of total internal reflection, such that total internal reflection is happening when the light beam total internal reflected by the first total internal reflection surface 124 strikes the second total internal reflection surface 126 .
  • the second total internal reflection surface 126 is adjoined to the first total internal reflection surface 124 .
  • the third total internal reflection surface 128 is designed for making an incident angle of a light beam reflected by the beam splitter 18 and striking the third total internal reflection surface 128 be larger than or equal to the critical angle of total internal reflection, such that total internal reflection is happening when the light beam total internal reflected by the second total internal reflection surface 128 strikes the third total internal reflection surface 128 , and the light beam total internal reflected by the third total internal reflection surface 128 is then propagating to the second surface 122 .
  • the optical element 14 corresponds to the first surface 120 .
  • the optical element 14 corresponds to the protrusive portion 1202 .
  • the optical element 14 can be a light emitting element configured of emitting a light beam or a light receiving element configured of receiving a light beam.
  • a diverging light beam emitted by the optical element 14 is collimated by the protrusive portion 1202 to form collimated beam when the optical element 14 is a light emitting element.
  • a light beam transmitting from the first light-guide element 12 to the optical element 14 is focused on the optical element 14 by the protrusion portion 1202 to form converging beam when the optical element is a light receiving element.
  • the first optical fiber 16 is contact with the second surface 122 , such that the first optical fiber 16 is optically coupled to the first light-guide element 12 .
  • the beam splitter 18 is attached on the first surface 120 .
  • the beam splitter 18 is disposed in the recess 1204 formed on the first surface 120 .
  • a refractive index of the beam splitter 18 is different from the refractive index of the first light-guide element 12 .
  • the beam splitter 18 partially reflects and partially transmits a light beam striking thereon.
  • the beam splitter 18 is a filtering plate, an optical film, an optical resin or an optical cement.
  • the optical module 10 further includes an optical combining structure 20 disposed between the first light-guide element 12 and the beam splitter 18 .
  • the optical combining structure 20 is used for fastening the splitting element 18 on the first light-guide element 12 .
  • the optical combining element 20 is, for example, optical cement, optical buckling structure which can tightly fasten the beam splitter 18 on the first light-guide element 12 .
  • the optical transceiver module 10 further includes a micro optical sensor 22 .
  • the micro optical sensor 22 is configured of sensing a transmitting light beam transmitting through the beam splitter 18 .
  • the micro optical sensor 22 is, for example, charge-coupled device or complementary metal-oxide-semiconductor (CMOS) component.
  • CMOS complementary metal-oxide-semiconductor
  • the beam splitter 18 includes a light emitting surface 180 .
  • the light emitting surface 180 includes a plurality of micro structures 182 which can scatter light beam passing therethrough, such that the sensing effect of the micro optical sensor 22 is enhanced.
  • the optical element 14 when the optical element 14 is a light emitting, the light beam emitted from the optical element 14 propagates within the first light-emitting element 12 via the protrusion portion 1202 and then propagates to the first total internal reflecting surface 124 .
  • the light beam is total internal reflected by the first total internal reflection surface 124 and then propagates to the second total internal reflection surface 126 .
  • the beam splitter 18 After that, the light beam is total internal reflected by the second total internal reflection surface 126 and then propagates to the beam splitter 18 .
  • the beam splitter 18 partially reflects and partially transmits the light beam striking thereon, such that the light beam is split into a reflected beam and a transmitting beam.
  • the reflected beam propagates to the third total internal reflection surface 128 and is total internal reflected by the third total internal reflection surface 128 . After that, the reflected beam propagates to the second surface 122 and enters the first optical fiber 16 through the second surface 122 .
  • the transmitting beam propagates to the micro optical sensor 22 through the micro-structures 182 .
  • a light beam received from the first optical fiber 16 propagates to the first light-guide element 12 through the second surface 122 , and then propagates to the third total internal reflection surface 128 .
  • the light beam is total internal reflected by the third total internal reflection surface 128 and then propagates to the beam splitter 18 .
  • the beam splitter 18 partially reflects and partially transmits the light beam striking thereon, such that the light beam is split into a reflected beam and a transmitting beam.
  • the reflected beam propagates to the second total internal reflection surface 126 , and is total internal reflected by the second total internal reflection surface 126 , such that the reflected beam propagates to the first total internal reflection surface 124 . After that, the reflected beam is total internal reflected by the first total internal reflection surface 124 , and then is focus on the optical element 14 by the protrusion portion 1202 .
  • the light transceiver module 1 further includes a second light-guide element 24 , a second optical fiber 26 , and a light receiving element 28 .
  • the second optical fiber 26 is correspondingly disposed on the second light-guide element 24 for propagating an external light beam to the second light-guide element 24 .
  • the light receiving element 28 is corresponding to the second light-guide element 24 .
  • the light receiving element 28 is configured of receiving the external light beam.
  • a refractive index of the second light-guide element 24 is the same as the refractive index of the first light-guide element 12 . However, the refractive index of the second light-guide element 24 can also be different from the refractive index of the first light-guide element 12 .
  • the second light-guide element 24 includes a third surface 240 .
  • the second light-guide element 24 is connected to the first light-guide element 12 , and the third surface 240 and the first surface 120 are at the same level.
  • the second light-guide element 24 and the first light-guide element 12 can be in one-piece form, however the second light-guide element 24 and the first light-guide element 12 can be combined by connecting to each other.
  • the second light-guide element 24 further includes a forth total internal reflection surface 250 , the forth total internal reflection surface 250 is designed for making an incident angle of the external light beam propagated from the second optical fiber 15 and striking the forth total internal reflection surface 250 be larger than or equal to a critical angle of total internal reflection, such that total internal reflection is happening when the external light beam propagated from the second optical fiber 15 and entering the first light-guide element 12 strikes the forth total internal reflection surface 250 . Therefore, the light receiving element 28 can receive the external light beam propagated from the second optical fiber 26 and entering the second light-guide element 24 .

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Optical Couplings Of Light Guides (AREA)
  • Light Receiving Elements (AREA)
US13/912,619 2013-04-01 2013-06-07 Optical module and optical transceiver module Active 2033-10-18 US9195017B2 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
TW102111773 2013-04-01
TW102111773A 2013-04-01
TW102111773A TWI468760B (zh) 2013-04-01 2013-04-01 光學模組及光收發模組

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US9195017B2 true US9195017B2 (en) 2015-11-24

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JP (1) JP2014203075A (zh)
KR (1) KR20140119605A (zh)
TW (1) TWI468760B (zh)

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US20160238794A1 (en) * 2015-02-12 2016-08-18 Source Photonics (Chengdu) Co., Ltd. Integrated lens with multiple optical structures and/or surfaces, optical module and transceiver including the same, and methods of making and using the same
US20170168250A1 (en) * 2015-12-15 2017-06-15 Huawei Technologies Co., Ltd. Integrally formed coupling module
US20170168235A1 (en) * 2015-12-09 2017-06-15 Intel Corporation Chip-to-chip interconnect with embedded electro-optical bridge structures
US9869818B2 (en) * 2015-02-12 2018-01-16 Source Photonics (Chengdu) Co., Ltd. Integrated lens with multiple optical structures and vent hole
CN110632711A (zh) * 2018-06-21 2019-12-31 禾橙科技股份有限公司 光纤模组
US20220317388A1 (en) * 2021-03-31 2022-10-06 Enplas Corporation Optical receptacle and optical module

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CN104459925A (zh) * 2013-09-17 2015-03-25 富士康(昆山)电脑接插件有限公司 透镜模组
CN108776373A (zh) * 2018-06-21 2018-11-09 青岛海信宽带多媒体技术有限公司 光模块
US11025030B2 (en) 2018-07-12 2021-06-01 Hisense Broadband Multimedia Technologies Co., Ltd. Optical module
CN108919433B (zh) * 2018-07-12 2020-01-17 青岛海信宽带多媒体技术有限公司 一种光模块
JP7125309B2 (ja) * 2018-09-03 2022-08-24 株式会社エンプラス 光モジュール
CN112904494B (zh) * 2019-12-03 2023-08-08 青岛海信宽带多媒体技术有限公司 一种光模块

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TW201439628A (zh) 2014-10-16
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JP2014203075A (ja) 2014-10-27
KR20140119605A (ko) 2014-10-10

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